Method for the manufacture of house-building briquets.



IUU

UNITED STATES PATENT OFFICE.

GEORG HACKVIN LUNDBERG, OF GOTTENBORG, SWEDEN.

METHOD FOR THE MANUFACTURE OF HOUSE-BUILDING IBRIQUETS.

No Drawing.

To all whom it may concern:

Be it known that I, GEORG HAoKvIN LUND- BERG, a subject of the King of Sweden, residing at Gottenborg, in the county of Gottenborg and Bohus and Kingdom of Sweden, have invented new and useful Improvements in a Method for the Manufacture of House-Building Briquets, of which the following is a specification.

This invention refers to bricks for the construction of house-buildings which are tile shaped in form, as well as to a method for the manufacture of such bricks. The object of this invention is to provide a material for house-building, which in certain qualities is similar to wood and in other qualities similar to stone or ordinary houseconstructing bricks. By means of such briquets the houses can be constructed for a considerably lower price than usually is possible if built of wood, and the walls will be fire-proof, and of less weight as well as more protective against cold and moisture in comparison with walls constructed of stone or ordinary bricks.

The improved bricks or briquets are composed of the following substances in about the proportions specified:

22 gallons pure clay.

2.2 gallons light moss litter free from earth and sand.

18 pounds braked flax straw.

9 pounds hemp fiber.

35 pounds chaff.

Though I have here specified some exact proportions I do not want to limit myself to exclusively these proportions as they can be varied in some degree without departing from the scope of the invention proper.

The moss litter, flax straw and hemp fiber can with good result sometimes be substituted by other vegetable substances of a similar structure such as faded leaves in a dry state.

The specified substances are mixed very thoroughly and stirred with water, until the mixture attains the consistency of a porridge. It is of considerable importance that the mixing and stirring of the substances are performed with great accuracy, partlcularly for the purpose that the fibrous 1ngredients may be intimately mingled with the clay. To accomplish that, I do not mm the substances merely in open vessels, but I prefer to use specially constructed apparatus as used in connection with other manufac- Specification of Letters Patent.

Patented July 3, 1917.

tures of similar character, and comprising a drum with agitating members revolved in opposite directions with rather small spaces left between these members, Where they pass one another, so that the ingredients of the mixture, when forced through the spaces between the agitating members, are really worn and torn to pieces.

Having thus completed the mixing of the substances I put it in a vessel from which the mass is forced out by means of a piston through an orifice into a mold where it attains the shape of comparatively thin plates or briquets, which are compressed by applying pressure upon a wet iron plate laid over the mold. Afterward the upper surfaces of the briquets are smoothed or ground by means of a steel plate. The briquets after that are inverted and their rear surfaces smoothed and ground as before mentioned, and then the briquets are put into a kiln or drying chamber and dried in an even temperature of about 85 degrees centigrade.

It is expedient to powder the briquets with saw dust before drying them, because the saw dust has great ability to absorb any dampness in the steam or the hot air used for heating the drying chamber, and, because of that, the time for the drying process is shortened, whereby the splitting or cracking of the briquets, when drying, will be prevented. After the completion of the drying process the saw dust is removed, in order that the finished briquets may not contain any wood, which would reduce their fire-proof character. When dried the briquets are cut down into desired sizes by means of a circular saw and their two fiat surfaces ground to procure exactly the same thickness of all briquets. After that the briquets are dipped into an impregnating solution of alum, horn glue, caseinate, ocher, chalk and water, which substances are intimately boiled. The proportions of these substances, which I have found to best suit the purpose are Having been soaked in the impregnating solution the briquets once more are dried as before mentioned, and finally their surfaces are coated with water glass or polish of spirit whereafter they are ready for use.

Of the substances used, the braked straw may not be too short and the chaff and shins may not be removed therefrom, in order to increase the cohering capacity in the mass when treated in the mixing drum. The mass will as a consequence thereof attain higher elasticity and toughness, which will in a considerable degree increase the solidity of the briquets and their resistance when they are cut down to desired sizes as well as when used in the walls of a building.

The herein described improved briquets are fully impervious to moisture as well as to dryness and they combine very good insulating capacity with cheapness in the manufacture.

Having thus described my said invention and how it is to be performed, What I claim as new and want to protect by Letters Patent is:

1. The method for the manufacture of house-building briquets which consists in mixing fibrous vegetable substances with clay and sufficient water to obtain a mass of the required consistency, molding briquets from this mass, smoothing the exterior surfaces of the briquets, coating the said surfaces with sawdust, and drying the briquets with hot fluid while thus coated.

2. The method for the manufacture of house-building briquets which consists in mixing fibrous vegetable substances with clay and sufiicient water to obtain a mass of the required consistency, molding the said mass into briquets, drying the briquets until they become hard, then impregnating the briquets with a solution of alum, hornglue, caseinate, ocher and chalk in water, and drying the briquets again.

3. A composition for house-building briquets consisting of fibrous vegetable substances and clay impregnated with alum, hornglue, caseinate, ocher and chalk.

In testimony whereof I have aflixed my signature in presence of two witnesses.

GEORG HACKVIN LUNDBERG.

Witnesses:

GUSTAF LETI-I, ALEX ENGELBERG.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C." 

